It is essentially possible, and should be well sought for, to achieve global balance. However, this would take a few key measures to become achievable. The first measure necessary for balance would be the universal agreement of the distribution of resources. This first measure alone would cause immense...panic, particularly in America where society is used to excess.
The term global balance is vague, and its hard to know to what it pertains. Regardless of what global balance is in reference to, its still largely unobtainable, as inequality persists despite people's best intentions and intercessions. There is a finite number of resources on the planet and, when people recognize that, the ones who can will always grab more for themselves.